No, I don't believe it is. I just nominated the Faure because there were a couple of other mentions of requiems and the Faure should not be overlooked. As we know, a requiem is composed using the specific latin text of the requiem mass, or mass for the dead. Similarly other masses that were written to celebrate specific days on the liturgical calendar are based on specific latin text. Oratorios do not necessarily need to use sacred themes or text.

Speaking of oratorios, I purchased the following two years ago in France. It is only available on import in Australia. It is a harmonia Mundi CD and is available on Amazon. It has become one of my top five CD's at this time.

Maddalena ai piedi di Cristo by Antonio Caldara
Antonio Caldara (Composer), Rene Jacobs (Conductor), Basel Scola Cantorum (Orchestra), Maria Cristina Kiehr, Rosa Dominguez,Bernarda Fink, Andreas Scholl, Gerd Turk, Ulrich Messthaler, Chiara Banchini. Label: Harmonia Mundi (France)
ASIN: B0000007C4

http://www.youtube.com/watch?v=u_2tP...eature=related
(Track 1 Disc 1.)
http://www.youtube.com/watch?v=AFBp7puG6C4
(Track 58, Disc 2.)